Indicator for tanks.



PATBNTED APR.21,1908. j

' J. 13 LAURSEN.

INDICATOR FOR TANKS.

APPLICATION FILED APB- 11.1907.

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' Eric- JULIUS B. LAURSEN, OF SORKNESS, NORTH DAKOTA.

Specification of Letters Patent.

INDICATOR FOR,- TANKS.

Patented April 21, 1908.

Application filed April 11, 1907. Serial No. 367,539.

To all whom it may concern:

Be it known that I, JULIUS B. LAURSEN, a citizen of the United States, residing at Sorkness, in the county of Ward and'State of North Dakota, have invented new and useful Im rovements in Indicators for-Tanks, of whic the following is a specification.

My invention relates to an indicator for use In connection with tanks for receiving gasolene, alcohol, or analogous liquids. One object of the invention is the provi- 810.11 of means for indicating the-amount of liquid contained in the tank.

Another object of the invention is the'provision of means for connecting the indicator to a tank of air-tight construction. A further object of the invention is the provision of means for'positioning the indicator with respect to the tank so that the-said indlcator will not protrude to any great extent beyond the surface of the portion of the tank to which it is ap' lied. 4 7 Other objects. of t'e invention .are simphclty of construction, efiiciency of opera tion, durability and inexpensiveness of manufacture. Y

With these and other objects in view,'. the mvention consists in the construction, combination and arrangement of parts as hereinafter referred to and as embodied in the acthe preowever, I make such companymg drawings. disclosin ferred form of the invention. l -l desire it understood that I may changes, variations and modifications .as

. of the collar and a comewithin the scope of the claims hereunto ap ended.

n the drawings :Figure 1 is a sectional view of a tank and indicator a plied thereto; Fig. 2 is a perspective view 0 the indicator detached from the tank; Fi 3 is a detail view of the collar carried by t e tank and for supporting the indicator; Fig. 4 is a detail view'of the member; Fig. 5 is a modification portion of the indicator coupled therewith.

Similar reference characters indicate corresponding parts throughout the several vlews.

In the drawings the numeral 2 designates an air-tight tank which may be ofany suitable material and of any desired construction; and in communication therewith is an air pressure gage 3 of the usual construction, the same forming no art of this invention. The tank 2 may be fiiled in any convenient manner; however, I have shown a removable screw threaded as at 11. to receive a threaded cap'as 12, having a central circular-opening,-

the inner wall of. the latter being screw threaded to receivea stopper as 13. Intermediate the threaded cap 12 and the upper peripheral edge of the member 9 is a crystal 10*, and at opposite sides of which arewashers 11 which are adapted to cushion the said crystal 10 when the cap-12 is in position on the member 9. Saidcr-ystal 10 is for the urpose of forming a transparent covering or thedial 10, and due to its particular mounting affords an air-tight and 11st proof closure for the said dial, thus making it impossible for air or gas, to escape even under high ressure through the member -'9. Depending f om the member 9 are guide rods 14 arranged in parallelism the latter carrying at their extremities a perforated plate 15 secured to the terminals of the guide rods 14 by nuts 16, Centrally of the member 9 is an openin 17 terminating at one end in .a decrease opening 7 17 and mounted in the opening 17 is a rod 18 having threaded reduced ends 18, one of which is connected by a sleeve 19, to a spiral member 20, and the other endextending through the decreased opening 17 and having connection with a pointer 20 adapted to rotate over the dial 10 when the spiral member 20 is caused to move by. a float 21 slidably mounted on said spiral membe'r20. u To position the spiral member 20 and to guide the float 21 a plate 22 is provided having extensions 23 in whichare oIpen-ings for receiving the guide rods 14; an said plate '22 has a depending sleeve 24 which .is' inserted in the opening in theflo'at 21 to revent the wearing of the-material of the oat as the latter ismoved throughout thecourse of thespiral membef 20, and to also relieve the friction incident to such movement. The said plate 22 slidably mounted on the guide rods 14 will prevent-turning or displacement of the float 2-Lin its course of movement on the spiral member 20'. v It will I 9, thereby moving the ointer 20 over the.

face of the dial 10 until t e tank has received the desired quantity of fluid, which will be determined by the indicating notations on the face of the dial. In drawing off the fluid from the tank, the float will move downwardly and operatethe spiral member 20 and correspondingly actuate the pointer 20. By this means the quantity of fluid in the tank may always be reliably and accurately ascertained.

- In Fig. 5 I have shown a slight modification of the construction of collar for receivin the member 9; and in this instance the co lar is of cup-shaped form as at 26 having a central threaded opening 27 for receiving the member 9 so that the latter will not extend above the top of the tank to which the collar 26 may be applied.

Having thus described the invention, what is claimed is: c

1. In a device of the class described, a dial receiving member having a central bore terminatin at one end in a recess, a rod havin threads extremities rotatably mounted in the bore, a pointer engaging one of the threaded ends of the rod and adapted to rotate in the recess of the member, a float,

means cooperative with the latter and the opposite end of the rod to actuate the same to move the pointer, a crystal mounted on said member above the recess therein, a detachable cap for securing the crystal in position on the member, and a removable stopper carried by theeap.

2'. In a tank having a threaded opening, a removable cup shaped collar in threaded engagement with the threaded opening, a dee tachable dial receiving member mounted in said collar and having a central bore terminating in a recess at one end of the member, a dial having notations secured in the recess, a

rod having opposite threaded ends rotatively mounted in the bore, a pointer in threaded engagement with one threaded end of the rod and adapted to rotate in the recess above the dial, a float member, means associated with the latter and having threaded connection with the op osite threaded end of the rod for rotating t e same to cause the movement of'the pointer'when said float is caused to be lowered or elevated, said dial receiving member having in its outer face screw threads at one end thereof, a screw threaded cap in en agement with the threaded end of the mem er, and a crystal secured in position on the member above the recess by the collar.

3. In a tank having an opening, a dial receiving member mounted in the opening and having a central bore terminating at one end in a recess in'said member, guide rods depending in parallelism from said member, a perforated plate moiinted on the free terminals of said guide rods, nuts for locking the plate in position, a rod having oppositely threaded ends rotatively mounted in the boreof the member, a pointer movable in the recess and in threaded engagement with one end of the rod, a spiral member intermediate the guide rods, a threaded sleeve in engagement with the spiral member and the remaining threaded end of the rotatable rod for connecting said spiral member thereto, a float slidable on the spiral member, a plate having opposite extensions provided with openings secured to said float, the

guide rods passing through the openings in the extensions for holding the float in posi-' JULIUS B. LAURSEN.

Witnesses:

OSCAR HAUGE, E. F. FISHER. 

